38736440 has 32 divisors (see below), whose sum is σ = 91746000. Its totient is φ = 14678784.

The previous prime is 38736437. The next prime is 38736487. The reversal of 38736440 is 4463783.

It is a self number, because there is not a number n which added to its sum of digits gives 38736440.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24725 + ... + 26244.

Almost surely, 2^38736440 is an apocalyptic number.

It is an amenable number.

38736440 is an abundant number, since it is smaller than the sum of its proper divisors (53009560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38736440 is a wasteful number, since it uses less digits than its factorization.

38736440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50999 (or 50995 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 38736440 is about 6223.8605382833. The cubic root of 38736440 is about 338.3554958641.

The spelling of 38736440 in words is "thirty-eight million, seven hundred thirty-six thousand, four hundred forty".